As Carl Sagan memorably reminds us, we're not leaving Earth anytime soon. But as Carl Sagan also memorably reminds us, that's no reason not to keep learning about how we could leave Earth for other worlds someday. That's what NASA's Kepler Mission is about: identifying other planets in distant solar systems — some of which might be Earthlike. Kepler has already identified 1,235 candidate systems using an orbiting telescope, and this infographic shows all of them to scale with our own pale blue dot.

Dr. Irwin Redlener has spent his career devising solutions to large-scale problems of health care for disenfranchised children. The latest expression of his single-minded agenda combines excellence in pediatric care with cutting-edge design, the latest technology, and the worldview of Carl Sagan.